diff --git a/package-lock.json b/package-lock.json
index d935422..2c32d62 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -654,6 +654,12 @@
             "integrity": "sha1-BuuE8A7qQT2oav/vrL/7Ngk7PFA=",
             "dev": true
         },
+        "camelcase": {
+            "version": "3.0.0",
+            "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
+            "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo=",
+            "dev": true
+        },
         "caniuse-api": {
             "version": "3.0.0",
             "resolved": "https://registry.npmjs.org/caniuse-api/-/caniuse-api-3.0.0.tgz",
@@ -3189,21 +3195,21 @@
             "dev": true
         },
         "gulp": {
-            "version": "4.0.0",
-            "resolved": "https://registry.npmjs.org/gulp/-/gulp-4.0.0.tgz",
-            "integrity": "sha1-lXZsYB2t5Kd+0+eyttwDiBtZY2Y=",
+            "version": "4.0.2",
+            "resolved": "https://registry.npmjs.org/gulp/-/gulp-4.0.2.tgz",
+            "integrity": "sha512-dvEs27SCZt2ibF29xYgmnwwCYZxdxhQ/+LFWlbAW8y7jt68L/65402Lz3+CKy0Ov4rOs+NERmDq7YlZaDqUIfA==",
             "dev": true,
             "requires": {
-                "glob-watcher": "^5.0.0",
-                "gulp-cli": "^2.0.0",
-                "undertaker": "^1.0.0",
+                "glob-watcher": "^5.0.3",
+                "gulp-cli": "^2.2.0",
+                "undertaker": "^1.2.1",
                 "vinyl-fs": "^3.0.0"
             },
             "dependencies": {
                 "gulp-cli": {
-                    "version": "2.1.0",
-                    "resolved": "https://registry.npmjs.org/gulp-cli/-/gulp-cli-2.1.0.tgz",
-                    "integrity": "sha512-txzgdFVlEPShBZus6JJyGyKJoBVDq6Do0ZQgIgx5RAsmhNVTDjymmOxpQvo3c20m66FldilS68ZXj2Q9w5dKbA==",
+                    "version": "2.2.0",
+                    "resolved": "https://registry.npmjs.org/gulp-cli/-/gulp-cli-2.2.0.tgz",
+                    "integrity": "sha512-rGs3bVYHdyJpLqR0TUBnlcZ1O5O++Zs4bA0ajm+zr3WFCfiSLjGwoCBqFs18wzN+ZxahT9DkOK5nDf26iDsWjA==",
                     "dev": true,
                     "requires": {
                         "ansi-colors": "^1.0.1",
@@ -3225,6 +3231,23 @@
                         "v8flags": "^3.0.1",
                         "yargs": "^7.1.0"
                     }
+                },
+                "undertaker": {
+                    "version": "1.2.1",
+                    "resolved": "https://registry.npmjs.org/undertaker/-/undertaker-1.2.1.tgz",
+                    "integrity": "sha512-71WxIzDkgYk9ZS+spIB8iZXchFhAdEo2YU8xYqBYJ39DIUIqziK78ftm26eecoIY49X0J2MLhG4hr18Yp6/CMA==",
+                    "dev": true,
+                    "requires": {
+                        "arr-flatten": "^1.0.1",
+                        "arr-map": "^2.0.0",
+                        "bach": "^1.0.0",
+                        "collection-map": "^1.0.0",
+                        "es6-weak-map": "^2.0.1",
+                        "last-run": "^1.1.0",
+                        "object.defaults": "^1.0.0",
+                        "object.reduce": "^1.0.0",
+                        "undertaker-registry": "^1.0.0"
+                    }
                 }
             }
         },
@@ -9410,9 +9433,9 @@
             }
         },
         "v8flags": {
-            "version": "3.1.2",
-            "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.1.2.tgz",
-            "integrity": "sha512-MtivA7GF24yMPte9Rp/BWGCYQNaUj86zeYxV/x2RRJMKagImbbv3u8iJC57lNhWLPcGLJmHcHmFWkNsplbbLWw==",
+            "version": "3.1.3",
+            "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.1.3.tgz",
+            "integrity": "sha512-amh9CCg3ZxkzQ48Mhcb8iX7xpAfYJgePHxWMQCBWECpOSqJUXgY26ncA61UTV0BkPqfhcy6mzwCIoP4ygxpW8w==",
             "dev": true,
             "requires": {
                 "homedir-polyfill": "^1.0.1"
@@ -9768,14 +9791,6 @@
                 "which-module": "^1.0.0",
                 "y18n": "^3.2.1",
                 "yargs-parser": "^5.0.0"
-            },
-            "dependencies": {
-                "camelcase": {
-                    "version": "3.0.0",
-                    "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
-                    "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo=",
-                    "dev": true
-                }
             }
         },
         "yargs-parser": {
diff --git a/package.json b/package.json
index e1ea63b..007466c 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "devDependencies": {
         "autoprefixer": "6.3.6",
         "cssnano": "^4.1.10",
-        "gulp": "^4.0.0",
+        "gulp": "^4.0.2",
         "gulp-livereload": "^4.0.1",
         "gulp-nodemon": "^2.4.2",
         "gulp-postcss": "6.1.1",